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Atmel | SMART SAM D21 [DATASHEET SUMMARY]

Atmel-42181DS–SAM-D21_Summary–09/2014

Features

Processor

ARM Cortex-M0+ CPU running at up to 48MHz

Single-cycle hardware multiplier

Micro Trace Buffer (MTB)

Memories

32/64/128/256KB in-system self-programmable Flash

4/8/16/32KB SRAM Memory

System

Power-on reset (POR) and brown-out detection (BOD)

Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M) and 48MHz to 96MHz Fractional

Digital Phase Locked Loop (FDPLL96M)

External Interrupt Controller (EIC)

16 external interrupts

One non-maskable interrupt

Two-pin Serial Wire Debug (SWD) programming, test and debugging interface

Low Power

Idle and standby sleep modes

SleepWalking peripherals

Peripherals

12-channel Direct Memory Access Controller (DMAC)

12-channel Event System

Up to five 16-bit Timer/Counters (TC), configurable as either:

One 16-bit TC with compare/capture channels

One 8-bit TC with compare/capture channels

One 32-bit TC with compare/capture channels, by using two TCs

Three 24-bit Timer/Counters for Control (TCC), with extended functions:

Up to four compare channels with optional complementary output

Generation of synchronized pulse width modulation (PWM) pattern across port pins

Deterministic fault protection, fast decay and configurable dead-time between complementary output

Dithering that increase resolution with up to 5 bit and reduce quantization error

32-bit Real Time Counter (RTC) with clock/calendar function

Watchdog Timer (WDT)

CRC-32 generator

One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 interface

Embedded host and device function

Eight endpoints

Up to six Serial Communication Interfaces (SERCOM), each configurable to operate as either:

USART with full-duplex and single-wire half-duplex configuration

SPI

LIN slave

One 12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 20 channels

Differential and single-ended input

1/2x to 16x programmable gain stage

Automatic offset and gain error compensation

Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution

10-bit, 350ksps Digital-to-Analog Converter (DAC)

Two Analog Comparators (AC) with window compare function

Peripheral Touch Controller (PTC)

256-Channel capacitive touch and proximity sensing

I/O

Up to 52 programmable I/O pins

Drop in compatible with SAM D20

Packages

64-pin TQFP, QFN

48-pin TQFP, QFN

32-pin TQFP, QFN

Operating Voltage

1.62V – 3.63V